NH22B:
The 2018 Mw 7.5 Sulawesi Indonesia earthquake: tsunamigenic potential of strike slip faults I


Submit an Abstract to this Session


Session ID#: 66627

Session Description:
On September 28, 2018 at 6:03 pm local time (10:03 am UTC) a magnitude 7.5 earthquake ruptured ~80 km north of Palu along the Minahasa peninsula of Sulawesi, Indonesia.  The subsequent tsunami struck nearby coasts, resulting in severe damage to infrastructure and a death toll of more than one thousand victims.  This event clearly shows that strike-slip earthquakes of this magnitude have the potential to cause damaging tsunamis, at least locally, as result of coseismic displacement, tsunamigenic landslides, and/or local amplifying conditions. Whatever the mechanism, this tsunami has been an important wake up call and emphasizes the need to better under understand the tsunami hazard to all coastlines and not only those along major subduction zones.  This event serves as a reminder of the importance of continuously updating tsunami forecasting tools, infrastructure, and standard operation procedures, as well as the need for improved community awareness and preparedness.  We invite abstracts dealing with analysis and observations of this earthquake and tsunami, including its source and impact, past events in the region, and related earthquake and tsunami risk reduction measures.
Primary Convener:  Stefano Lorito, Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
Conveners:  Jessica Pilarczyk, University of Southern Mississippi, Division of Marine Science, Stennis Space Center, United States, Kelly J Stroker, National Centers for Environmental Information, NOAA, Boulder, CO, United States and Kenji Satake, The University of Tokyo, Earthquake Research Institute, Tokyo, Japan
Primary Liaison:  Jessica Pilarczyk, University of Southern Mississippi, Division of Marine Science, Stennis Space Center, United States
Chairs:  Kenji Satake, The University of Tokyo, Earthquake Research Institute, Tokyo, Japan, Kelly J Stroker, NOAA, National Centers for Environmental Information, Boulder, United States and Jessica Pilarczyk, University of Southern Mississippi, Division of Marine Science, Stennis Space Center, United States
OSPA Liaison:  Stefano Lorito, Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
Index Terms:

4313 Extreme events [NATURAL HAZARDS]
4315 Monitoring, forecasting, prediction [NATURAL HAZARDS]
4341 Early warning systems [NATURAL HAZARDS]
4564 Tsunamis and storm surges [OCEANOGRAPHY: PHYSICAL]

Abstracts Submitted to this Session:

Early and persistent supershear rupture of the 2018 Mw 7.5 Palu earthquake (Invited) (476052)
Lingsen Meng, University of California Los Angeles, Los Angeles, CA, United States, Han Bao, University of California, Los Angeles, Dept. of Earth, Planetary and Space Sciences, Los Angeles, United States, Jean-Paul Ampuero, Université Côte d’Azur, IRD, CNRS, Observatoire de la Côte d’Azur, Géoazur, Valbonne, France, Eric Jameson Fielding, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States and Cunren Liang, California Institute of Technology, Pasadena, CA, United States
Field survey of the 28 September 2018 Sulawesi tsunami (Invited) (476809)
Hermann M Fritz1, Costas Synolakis2, Nikos Kalligeris3, Vassilios Skanavis2, Fajar Santoso4, Mohammad Rizal4, Gegar Sapta Prasetya5, Yibin Liu1 and Philip L-F. Liu6, (1)Georgia Institute of Technology Main Campus, School of Civil and Environmental Engineering, Atlanta, GA, United States, (2)University of Southern California, Los Angeles, CA, United States, (3)University of California, Los Angeles, Los Angeles, CA, United States, (4)Tadulako University, Department of Agrotechnology, Palu, Indonesia, (5)Tsunami Research Foundation Indonesia, Indonesian Tsunami Scientific Community, Jakarta Selatan, Indonesia, (6)Texas A&M University, Civil and Environmental Engineering, College Station, United States
International Post-Tsunami Survey for Tsunami Palu-Donggala (ITST-Palu) (476748)
Laura S L Kong, PhD1, Ardito Kodijat2, Sachi Suzuki2, Srinivasa Kumar3, Ridwan Djamaludin4, Sadjuga5, Hermann M Fritz6, Gegar Sapta Prasetya7, Costas Synolakis8 and Ahmet Cevdet Yalçıner9, (1)UNESCO IOC - NOAA, International Tsunami Information Center, Honolulu, HI, United States, (2)UNESCO Intergovernmental Oceanographic Commission, Indian Ocean Tsunami Information Centre, Jakarta, Indonesia, (3)UNESCO Intergovernmental Oceanographic Commission, Secretariat for the Indian Ocean Tsunami Warning and Mitigation System (IOTWMS), Perth, Australia, (4)Coordinating Ministry for Maritime Affairs (CMMA), Jakarta, Indonesia, (5)Ministry for Research, Technology, and Higher Education (MORTHE), Jakarta, Indonesia, (6)Georgia Institute of Technology, School of Civil and Environmental Engineering, Atlanta, United States, (7)Ikatan Ahli Tsunami Indonesia – IATsI, Indonesian Tsunami Scientific Community, Jakarta, Indonesia, (8)University of Southern California, Los Angeles, CA, United States, (9)Middle East Technical University, Ankara, Turkey
Seafloor Deformation Analysis of Bay of Palu after the 28 September 2018 Mw 7.4 Palu-Donggala Earthquake (475886)
Udrekh Udrekh1, Marina C Frederik2, Nugroho Hananto3, Ramadhan Adhitama4, Shahab Sahabuddin5, Asrafil Asrafil6, Muhamad Irfan7, Omar Moefti7, Bondan F Riyalda8 and Dimas B Putra9, (1)National Agency for Disaster Countermeasure (BNPB), Jakarta, Indonesia, (2)Badan Pengkajian dan Penerapan Teknologi, PTPSW-TPSA, DKI Jakarta, Indonesia, (3)National Research and Innovation Agency, Jakarta Pusat, Indonesia, (4)Trisakti University, Geologi, DKI Jakarta, Indonesia, (5)Hasanuddin University, Geologi, Makassar, Indonesia, (6)Tadulako University, Geologi, Palu, Indonesia, (7)Badan Pengkajian dan Penerapan Teknologi, BSTK - TPSA, DKI Jakarta, Indonesia, (8)Badan Pengkajian dan Penerapan Teknologi, BTSK-TPSA, DKI Jakarta, Indonesia, (9)Badan Pengkajian dan Penerapan Teknologi, BTSK - TPSA, DKI Jakarta, Indonesia
Simulation of 2018 Tsunami along the Coastal Areas in the Palu Bay (476417)
Ap Van Dongeren, Deepak Vatvani and Maarten Van Ormondt, Deltares, Delft, Netherlands

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